Bolster.



PATENTED AUG. 6, 1907.

I No. 862,843.

S. OTIS. BOLSTER.

APPLICATION IILE'D DBO. 20. 1906.

. c. -1ns NORRIS PETERS co" WASHINGTON. n

UNITED STATES PATENT oEEIoE.

SPENCER OTIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL PATENT HOLDINGCOMPANY, A CORPORATION OF ILLINOIS.

BOLSTER.

Specification of Letters Patent.

Patented Aug. 6, 1907.

To all whom it may concern:

Be it known that I, SPENCER One, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Bolsters for Railway-Gars, of which the following is a specification.

My invention relates to bolsters for railway cars; and has lor itsobject to provide an improved structure in which the required strengthmay be attained by the use of a minimum number of parts and by the useof parts which may be found upon the market in commercial shapes.

To this end my invention consists in the combinations and detailshereinafter set forth and claimed.

In the accompanying drawingsFigure 1 isa top plan view of a bolsterconstructed in accordance with my invention. Fig. 2 is a side elevationof the bol ster. Fig. 3 is a transverse section on the line 3 of Figs. 1and 2. Fig. 4 is a transverse section on the line 4 of Figs. 1 and 2. I

In constructing a bolster in accordance with my invention, I provide thetop or compression member formed of two channel bars arranged inparallel relation, side by side, having their web portions a arrangedhorizontally and their flanges (1 depending vertically therefrom. Thesechannel bar members are arranged in juxtaposition at their ends and arespaced apart slightly to receive between the flanges a the verticalflange portion 1) of a T iron lower or tension member b.

It will be observed that the ends of the compression and tension membersare secured together by rivets c passing through the vertical flanges ofthe members. At their middle points the channel bar top members arebowed outwardly to form a widened support for the center bearing 2,which is secured to the top menibers by suitable fastening devices, suchas rivets e. The lower or tension member is downwardly bowed at itsmiddle portion, and each of the channel bar members constituting theupper portion of the bolster is connected by a strut d to the verticalflange of the lower member.

In order to further strengthen the bolster at its ends to enable it toresist the strains applied thereto, I may use the loop g arrangedhorizontally around the ends of the bolster members, the side members ofthe loop engaging the flanges a of the top bolster member. The rivets care passed through the side members of the loop and through the flangesol' the top and bottom members of the bolster. Thus I provide a longerbearing for the rivets and provide a greater resistance for the strainsat this point.

By constructing a bolster as shown and described, it will be seen that Ihave produced a bolster having a minimum number of parts in which greatstrength is combined with simplicity of construction, and that thebolster may be made from metal of commercial shapes which may be readilyobtained in the market.

I claim:

1. A bolster for railway cars comprising an upper or compression membercomposed of spaced channel beams, and a lower or tension member formedof tee iron, said tension member having a flange secured at its ends tothe adjacent flanges of the channel beams.

2. A bolster for railway cars comprising; an upper member formed ofparallel channel beams, and a lower member having a flange secured atits ends between the adjacent flanges of said channel beams.

3. A bolster for railway cars comprising an upper or compression memberformed of spaced parallel channel beams having downwardly extendingflanges, and a flanged lower or tension member having an upwardlyextending flange entering the space between the channel beams andsecured to the adjacent flanges of said channel beams.

4. A bolster for railway cars comprising an upper member composed ofparallel channel beams having downwardly extending flanges, said channelbeams having out wardly bowed middle portions, a lower member formed oftee iron having its central flange arranged vertically and extendingbetween the adjacent flanges of the upper member at its ends, and meansfor securing the flanges of the upper and lower flanges together.

5. A holster for railway cars comprising an upper member composed ofchannel beams having an outwardly bowed middle portion, a lower membercomposed of a single tee iron connected at its ends to the ends of thechannel beams and having its middle portion downwardly bowed. and strutmembers connecting each or the channel beams to the tee iron member.

6. A bolster for railway curs comprising a top member composed ofparallel flanged portions having their adjacent flanges spaced apart, alower flanged member having a flange entering the space between theflanges of the top portions, a loop arranged around the end of thebolster members and having side members engaging the spaced flanges ofthe top portion, and means passing through the side members of the loopand the flanges for securing the members together.

SPENCER OTIS.

